Swecoin TTP 101, Руководство по обслуживанию

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TTP 101 Kiosk Printer Sub-system – Service Manual 0102 16
POWER INTERFACE
From firmware revision 1.17 the firmware senses, at power-ON, whether there is a jumper
in position SW4 (standard). If so, the burn time will be preset equal to the value set by
command ESC q= 10. The jumper should always be installed if the printhead is supplied
with +20 V. This is the case in all TTP 101 printers from serial number 8506 since their
connector board have a built-in +20 V regulator.
With earlier printers (serial numbers up to 8505 inclusive), the jumper SW4 should be
installed only if the printer control board is supplied with +20 V. If the supply voltage is
b20 V and +24 V, the jumper SW4 must be removed to prevent printhead
damage. The burn time will then be preset at power-ON equal to the value set by
command ESC q = 5. The burn time can then be adjusted by issuing the ESC q
command during printing.
JUMPERS
•
SW1 — A foil jumper selects 64 kbit RAM. (ONLY SWC-642.)
•
SW2 — A foil jumper selects 512 kbit EPROM. (ONLY SWC-642.)
•
SW3 — Not used.
•
SW4 — See subsection power interface above.
•
Unnumbered solder-jumper between J16/19 and J16/20 (ONLY SWC-642.).
See Subsection paper-out sensor above .